runtime: fix build failures after CL 137410043

No promise about correctness, but they do build.

TBR=khr
CC=golang-codereviews
https://golang.org/cl/143720043

src/runtime/asm_386.s

@@ -811,7 +811,7 @@ TEXT setg_gcc<>(SB), NOSPLIT, $0
 	MOVL	DX, g(AX)
 	RET
 
-// check that SP is in range [g->stackbase, g->stackguard)
+// check that SP is in range [g->stack.lo, g->stack.hi)
 TEXT runtime·stackcheck(SB), NOSPLIT, $0-0
 	get_tls(CX)
 	MOVL	g(CX), AX

src/runtime/asm_amd64p32.s

@@ -590,7 +590,7 @@ TEXT runtime·setg(SB), NOSPLIT, $0-4
 	MOVL	0, AX
 	RET
 
-// check that SP is in range [g->stackbase, g->stackguard)
+// check that SP is in range [g->stack.lo, g->stack.hi)
 TEXT runtime·stackcheck(SB), NOSPLIT, $0-0
 	get_tls(CX)
 	MOVL	g(CX), AX

src/runtime/os_freebsd.c

@@ -153,8 +153,8 @@ runtime·newosproc(M *mp, void *stk)
 	
 	// NOTE(rsc): This code is confused. stackbase is the top of the stack
 	// and is equal to stk. However, it's working, so I'm not changing it.
-	param.stack_base = (void*)mp->g0->stackbase;
-	param.stack_size = (byte*)stk - (byte*)mp->g0->stackbase;
+	param.stack_base = (void*)mp->g0->stack.hi;
+	param.stack_size = (byte*)stk - (byte*)mp->g0->stack.hi;
 
 	param.child_tid = (void*)&mp->procid;
 	param.parent_tid = nil;

src/runtime/os_solaris.c

@@ -121,14 +121,17 @@ runtime·newosproc(M *mp, void *stk)
 	Sigset oset;
 	Pthread tid;
 	int32 ret;
+	uint64 size;
 
 	USED(stk);
 	if(runtime·pthread_attr_init(&attr) != 0)
 		runtime·throw("pthread_attr_init");
 	if(runtime·pthread_attr_setstack(&attr, 0, 0x200000) != 0)
 		runtime·throw("pthread_attr_setstack");
-	if(runtime·pthread_attr_getstack(&attr, (void**)&mp->g0->stackbase, &mp->g0->stacksize) != 0)
+	size = 0;
+	if(runtime·pthread_attr_getstack(&attr, (void**)&mp->g0->stack.hi, &size) != 0)
 		runtime·throw("pthread_attr_getstack");	
+	mp->g0->stack.lo = mp->g0->stack.hi - size;
 	if(runtime·pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0)
 		runtime·throw("pthread_attr_setdetachstate");
 

src/runtime/sys_plan9_386.s

@@ -192,7 +192,7 @@ TEXT runtime·sigtramp(SB),NOSPLIT,$0
 	// change stack
 	MOVL	g_m(BX), BX
 	MOVL	m_gsignal(BX), BP
-	MOVL	g_stackbase(BP), BP
+	MOVL	(g_stack+stack_hi)(BP), BP
 	MOVL	BP, SP
 
 	// make room for args and g

src/runtime/sys_plan9_amd64.s

@@ -190,7 +190,7 @@ TEXT runtime·sigtramp(SB),NOSPLIT,$0
 	// change stack
 	MOVQ	g_m(BX), BX
 	MOVQ	m_gsignal(BX), R10
-	MOVQ	g_stackbase(R10), BP
+	MOVQ	(g_stack+stack_hi)(R10), BP
 	MOVQ	BP, SP
 
 	// make room for args and g

src/runtime/sys_solaris_amd64.s

@@ -129,10 +129,12 @@ TEXT runtime·tstart_sysvicall(SB),NOSPLIT,$0
 
 	// Layout new m scheduler stack on os stack.
 	MOVQ	SP, AX
-	MOVQ	AX, g_stackbase(DX)
+	MOVQ	AX, (g_stack+stack_hi)(DX)
 	SUBQ	$(0x100000), AX		// stack size
-	MOVQ	AX, g_stackguard(DX)
+	MOVQ	AX, (g_stack+stack_lo)(DX)
+	ADDQ	$const_StackGuard, AX
 	MOVQ	AX, g_stackguard0(DX)
+	MOVQ	AX, g_stackguard1(DX)
 
 	// Someday the convention will be D is always cleared.
 	CLD

src/runtime/sys_windows_386.s

@@ -192,8 +192,11 @@ TEXT runtime·externalthreadhandler(SB),NOSPLIT,$0
 	LEAL	g_end(SP), BX
 	MOVL	BX, g_m(SP)
 	LEAL	-4096(SP), CX
-	MOVL	CX, g_stackguard(SP)
-	MOVL	DX, g_stackbase(SP)
+	MOVL	CX, (g_stack+stack_lo)(SP)
+	ADDL	$const_StackGuard, CX
+	MOVL	CX, g_stackguard0(SP)
+	MOVL	CX, g_stackguard1(SP)
+	MOVL	DX, (g_stack+stack_hi)(SP)
 
 	PUSHL	16(BP)			// arg for handler
 	CALL	8(BP)
@@ -201,7 +204,7 @@ TEXT runtime·externalthreadhandler(SB),NOSPLIT,$0
 
 	get_tls(CX)
 	MOVL	g(CX), CX
-	MOVL	g_stackbase(CX), SP
+	MOVL	(g_stack+stack_hi)(CX), SP
 	POPL	0x14(FS)
 	POPL	DI
 	POPL	SI
@@ -293,9 +296,12 @@ TEXT runtime·tstart(SB),NOSPLIT,$0
 
 	// Layout new m scheduler stack on os stack.
 	MOVL	SP, AX
-	MOVL	AX, g_stackbase(DX)
+	MOVL	AX, (g_stack+stack_hi)(DX)
 	SUBL	$(64*1024), AX		// stack size
-	MOVL	AX, g_stackguard(DX)
+	MOVL	AX, (g_stack+stack_lo)(DX)
+	ADDL	$const_StackGuard, AX
+	MOVL	AX, g_stackguard0(DX)
+	MOVL	AX, g_stackguard1(DX)
 
 	// Set up tls.
 	LEAL	m_tls(CX), SI

src/runtime/sys_windows_amd64.s

@@ -229,8 +229,11 @@ TEXT runtime·externalthreadhandler(SB),NOSPLIT,$0
 	MOVQ	BX, g_m(SP)
 
 	LEAQ	-8192(SP), CX
-	MOVQ	CX, g_stackguard(SP)
-	MOVQ	DX, g_stackbase(SP)
+	MOVQ	CX, (g_stack+stack_lo)(SP)
+	ADDQ	$const_StackGuard, CX
+	MOVQ	CX, g_stackguard0(SP)
+	MOVQ	CX, g_stackguard1(SP)
+	MOVQ	DX, (g_stack+stack_hi)(SP)
 
 	PUSHQ	32(BP)			// arg for handler
 	CALL	16(BP)
@@ -238,7 +241,7 @@ TEXT runtime·externalthreadhandler(SB),NOSPLIT,$0
 
 	get_tls(CX)
 	MOVQ	g(CX), CX
-	MOVQ	g_stackbase(CX), SP
+	MOVQ	(g_stack+stack_hi)(CX), SP
 	POPQ	0x28(GS)
 	POPQ	DI
 	POPQ	SI
@@ -334,9 +337,12 @@ TEXT runtime·tstart_stdcall(SB),NOSPLIT,$0
 
 	// Layout new m scheduler stack on os stack.
 	MOVQ	SP, AX
-	MOVQ	AX, g_stackbase(DX)
+	MOVQ	AX, (g_stack+stack_hi)(DX)
 	SUBQ	$(64*1024), AX		// stack size
-	MOVQ	AX, g_stackguard(DX)
+	MOVQ	AX, (g_stack+stack_lo)(DX)
+	ADDQ	$const_StackGuard, AX
+	MOVQ	AX, g_stackguard0(DX)
+	MOVQ	AX, g_stackguard1(DX)
 
 	// Set up tls.
 	LEAQ	m_tls(CX), SI